package com.sky.service.impl;

import com.fasterxml.jackson.annotation.JsonFormat;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        //md5加密 使用spring提供的工具类
        String password = DigestUtils.md5DigestAsHex(employeeLoginDTO.getPassword().getBytes());


//        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        System.out.println("当前线程的id："+ Thread.currentThread().getId());

        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置账号状态
        employee.setStatus(StatusConstant.ENABLE);
        //设置默认密码123456 md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置创建 时间
        employee.setCreateTime(LocalDateTime.now());
        //设置更新时间
        employee.setUpdateTime(LocalDateTime.now());
        //设置创建人
        //TODO 后期·需要获取当前登录用户的id
        employee.setCreateUser(BaseContext.getCurrentId());
        //设置更新人
        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    @Override
    public PageResult page(Integer page, Integer pageSize, String name) {
        PageHelper.startPage(page, pageSize);
        Page<Employee> list = employeeMapper.page(name);

        PageInfo<Employee> pageInfo = new PageInfo<>(list);
        return new PageResult(pageInfo.getTotal(), pageInfo.getList());
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = employeeMapper.selectByPrimaryKey(id);
        if (employee == null){
            throw new RuntimeException("当前员工不存在");
        }
        employee.setStatus(status);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updateByPrimaryKey(employee);
    }

    @Override
    public EmployeeDTO getById(Long id) {
        Employee employee = employeeMapper.selectByPrimaryKey(id);
        if (employee == null){
            throw new RuntimeException("当前员工不存在");
        }
        EmployeeDTO employeeDTO = new EmployeeDTO();
        //对象属性拷贝
        BeanUtils.copyProperties(employee, employeeDTO);
        return employeeDTO;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }
}
